Daikin VRV II Series - 8. Before Operation

Si39-303 Field Wiring
Installation Manual 185
Caution <Precautions when laying power wiring>
Use round pressure terminals for connections to the power terminal block.
When none are available, follow the instructions below.
!
Do not connect wiring of different thicknesses to the power terminal block. (Slack in the
power wiring may cause abnormal heat.)
!
When connecting wiring which is the same thickness, do as shown in the figure below.
!
For wiring, use the designated power wire and connect firmly, then secure to prevent outside
pressure being exerted on the terminal board.
!
Use an appropriate screwdriver for tightening the terminal screws. A screwdriver with a small
head will strip the head and make proper tightening impossible.
!
Over-tightening the terminal screws may break them.
!
See the table below for tightening torque for the terminal screws.
<Precautions when connecting the ground>
When pulling the ground wire out, wire it so that it comes through the cut out section of the cup
washer. (An improper ground connection may prevent a good ground from being achieved.)
Tightening torque (N · m)
M8 (Power terminal block)
5.5-7.3
M8 (Ground)
M3 (Inter-unit wiring terminal block) 0.8-0.97
Connect same-
thickness wiring
to both sides.
Power wire
Round pressure terminal
It is forbidden to
connect two to
one side.
It is forbidden to
connect wiring of
different thicknesses.
Round pressure terminal
Cup washer
Cut out section